When you’re invited to a casual business lunch, anticipate that it will be anything but casual. Your behavior is on display just as if you are in a business meeting. Any error you make can become a permanent stain on your professional record.

That’s why it’s important to keep these dining etiquette tips in mind in order to stay in top favor with your business associates and potential clients.

1. R.S.V.P.

If you receive an invitation to a business meal, it’s courteous to respond promptly. If you wait longer than one week, it might look like you’re holding out for a more attractive option. If you respond but don’t show up at all, you most likely won’t be invited again. Always follow through, keep your word and be on time.

2. Place your napkin in your lap.

To indicate good manners right off the bat, open your napkin and place it on your lap when you sit down. Never tuck it into your shirt or use it as a handkerchief. If you have to excuse yourself and visit the restroom or make a phone call, place it on your chair. At the end of the meal, place it neatly on the table, to the left of your plate.

3. Don’t overeat.

Don't belly up to the trough just because you're dining on an expense account. Order a simple lunch that you can gracefully eat in the allotted lunch hour. You’ll be seen as confident and in charge when you choose reasonably. Stay away from messy and difficult-to-eat foods including ribs, lobster, corn-on-the-cob, oversized sandwiches and pasta with a red sauce.

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